Methyl viologen and tetraviologen calix[4]resorcinol as mediators of the electrochemical reduction of [PdCl4]2− with formation of finely dispersed Pd0

Fullerene Mediated Electrosynthesis of Au/C60Nanocomposite

“…27 In recent years, metal nanoparticles (MNP) have been attracting a growing interest due to their unique properties and diverse uses in catalysis, electronics, biomedicine, optics, analysis, etc. [28][29][30][31][32][33][34] Mediated electrosynthesis [35][36][37][38][39][40][41][42][43][44][45][46][47] involving mediated electroreduction of metal complexes and ions in solution is an efficient method for MNP electrosynthesis in solution bulk. Unlike the other known electrochemical methods, such as pulsed sonoelectrochemistry [48][49][50] and the Reetz method, [51][52][53][54][55] in this method the stage of reduction of metal ions was moved from the electrode surface to the solution bulk.…”

Methylviologen mediated electrosynthesis of gold nanoparticles in the solution bulk

“…In continuation of the previously started studies on mediated electrosynthesis of metal nanoparticles in solution bulk, [31][32][33][34][35][36][37][38][39] we were the rst to perform an electrosynthesis of gold nanoparticles (AuNp) by methylviologen mediated reduction of Au(I) at potentials of the MV 2+ /MVc + redox couple in H 2 O/0.1 M NaCl medium. Upon direct reduction on a glassy carbon electrode, the metallic gold that is formed is deposited on the electrode, both in the absence and in the presence of the mediator.…”

“…7 However, mediated electrosynthesis lacks these restrictions, and in fact, it is widely used. Based on the idea of mediated reduction of metal ions, 30 we recently showed the principal possibility of efficient electrosynthesis of Pd and Ag nanoparticles in solution bulk by mediated electrochemical reduction of [PdCl 4 ] 2À in 60% aqueous DMF 31,32 or DMSO 33 and of in situ anodically generated Ag + ions in DMF 34,35 using methylviologen (MV 2+ ) and/or tetraviologen calix [4]resorcines with n-alkyl substituents in the resorcinol rings as the mediator, at potentials of the MV 2+…”

Toward High‐Voltage, Energy‐Dense, and Durable Aqueous Organic Redox Flow Batteries: Role of the Supporting Electrolytes

“…However, additional supporting salt in MV 2+ may cause precipitation upon charging . The second electron transfer from MV +⋅ to neutral hydrophobic MV 0 (at −0.76 V vs. SHE) may cause precipitation and hydrogen evolution …”